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Step * 1 2 2 1 of Lemma qadd_grp_wf2

.....subterm..... T:t
1:n
1. x : ℚ@i
2. y : ℚ@i
⊢ qeq(x;y) = q_le(x;y) ∧b q_le(y;x)
BY
{ TACTIC:(BLemma `iff_imp_equal_bool` THENA Auto) }

1
1. x : ℚ@i
2. y : ℚ@i
⊢ ↑qeq(x;y) ⇐⇒ ↑(q_le(x;y) ∧b q_le(y;x))

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Latex:

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Latex:
.....subterm.....  T:t
1:n
1.  x  :  \mBbbQ{}@i
2.  y  :  \mBbbQ{}@i
\mvdash{}  qeq(x;y)  =  q\_le(x;y)  \mwedge{}\msubb{}  q\_le(y;x)


By

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Latex:
TACTIC:(BLemma  `iff\_imp\_equal\_bool`  THENA  Auto)

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